Cumulative ITIL Certs since 2008

These numbers are estimates based on number of exams taken multiplied by the pass rates. In some cases the pass rates are not available and I had to use a proxy pass rate. For ITIL V2 Foundation passrates I used the average V3 Foundation pass rate. For advanced ITIL V2 certifications I used 60% pass rates. These were as reasonable assumptions as I could make based on published data.